[libvirt] [PATCH] lxc: Bind mount container TTYs

[Richard Weinberger]

Am 26.06.2015 um 15:09 schrieb Martin Kletzander:
> On Tue, Jun 23, 2015 at 04:38:57PM +0200, Richard Weinberger wrote:
>> Instead of creating symlinks, bind mount the devices to
>> /dev/pts/XY.
>> Using bind mounts it is no longer needed to add pts devices
>> to files like /dev/securetty.
>>
> 
> I guess you meant /etc/securetty.

Lol, yes. :-)

> This patch makes sense, but if I start a container that I couldn't
> login as a root into (because of securetty), it still doesn't help, I
> still can't login.  Moreover, if I stop it and start it few times and
> restart the daemon (I'm not sure whether that's needed, it's just that
> I had to switch between gdb and non-gdb daemons and it happened only
> sometimes), I get this:
> 
>  error: internal error: guest failed to start: unexpected exit status 125
> 
> The error in log is:
> 
>  libvirt:  error : failed to setup stdout file handle: Bad file descriptor
> 
> I briefly looked at it and *cmd->outfdptr has the value of 247083264
> which is nowhere in the output of lsof for that process.  I know that
> it doesn't sounds even remotely related, but without this patch that
> doesn't happen.  Maybe it just uncovers some error rotting there for a
> long time...

Hmm, very strange. What guest container are you using?
I tried with a Debian jessi and had user namespace enabled.

Thanks,
//richard

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